JPH02503163A - Filter device and method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Filter device and method References to related patent applications No. 4,496,464 issued January 29, 1985 No. 1 and the technology cited within the patent.

History of invention Applicant's earlier U.S. Patent No. 1!4,496 issued January 29, 1985 ．． No. 464 includes a filter that allows the filter media to be rubbed or activated within the container. Discloses a filter system that includes a container with filter media arranged therein. It is. This system involves scrubbing or activating the filter media and following step 6. The costly auxiliary container, which has long been thought to be necessary, is omitted. Other known files The router system involves moving the medium into a second container and straining the medium within the second container. ri 9th! ! 1 Includes return to container.

Applicant's prior U.S. patents support filter media on a first screen. The scrubbing and scraping action occurs with the second screen device, and the second screen means is located in the vortex part of the toroidal flow pattern generated during the two-slide action. That was required. The toroidal flow pattern in this earlier patent indicates that contaminants Flow across the M2 screen device to be scraped from the media and transferred into the water. having suction inlets and outlets arranged with respect to each other and the second screen device to generate The water and contaminants are then passed through a second screen device. through the container and away from the container, leaving the scrubbed media within the container.

The present invention eliminates the second screen device and uses one screen device for filter media. It supports the This application by providing an outlet for activation Q of the rubbing water of the medium in the form It constitutes an improvement beyond man's previous patents.

The filter stack design made in accordance with the present invention is simple, low cost and operationally efficient. The filter of the present invention mainly removes solids and low concentration oil from lake water, seawater, etc. It is designed to take into account the sewage it contains. This particular neglect of sewage In Japan, conventional paper filters are commonly used because they are cheaper in cost than deep media filters. The purpose of the present invention is to use a paper-forming filter -F! Upgrading The object of the present invention is to provide a novel filter snit with efficient technology.

Summary of the invention The present invention relates to a method and apparatus for filtering contaminants from a fluid stream. The present invention employs a screen device that can be configured in a variety of different geometries. school The lean device is installed within the vessel in a manner that provides adequate support for the filter media and The media consists of multiple separate pieces of filter material that do not substantially penetrate the screen device. It is created.

During filtration operation, contaminated liquid passes through the media and through the screen device supporting the media. flow into and out of the container through the medium, while contaminants are deposited on the medium. .

The medium is sized to increase the pressure drop across the filter vessel to a predetermined value. an actuation that is cleaned or activated whenever its accumulated contaminants reach receive regularly. The activation stage involves a new Includes a regular flow system.

The fluidization stage involves arranging the pump inlet and outlet within the vessel in a manner that forms a toroidal flow path. The flow pattern must be such that the flow must be created in rows across the screen device. The screen device is included in the screen. The fluidization stage is a contaminant Contaminants are scraped from the filter media by transferring them into the scrubbing water. child This allows efficient removal of contaminated water in subsequent discharge stages while forming a flow into the vessel. I can do it.

The vessel is then of sufficient length to allow the cleaned media to settle within the filter layer. isolated for a period of time until there is no more wastewater in the filter container. The normalization stage F1m' is then carried out, and the pressure drop across the filter N is again unobserved. It continues again until the value is increased.

Therefore, the primary object of the present invention is to provide a filter medium for use in filtering a liquid stream. The object of the present invention is to provide a method and apparatus for sequential evacuation and subsequent cleaning.

Another object of the invention is to consider the contaminated flow of liquid over a period of time and to Separating the liquid and then filtering the media during another time interval in a novel and non-obvious manner Provides a method and apparatus for scrubbing cleanly by using It is designed to be a shell within the same enclosure.

Another object of the invention is to introduce dirt into a container having a liquid space and a filter media space. at which point the contaminated liquid passes through the filter media and is thus contaminated. The dyed material is allowed to remain in the medium, and then the medium is transferred to the filter medium without removing it from the container. To disclose and provide methods for controlling the flow of contaminated liquids using Ru.

Still another object of the invention is to filter contaminants from a flowing liquid so that the filter media is Scrubbed to remove contaminants, contaminants are removed from the system, scrubbing and filtration Normally with particles of filter carrier inside such that both actions occur in the same container. It's all about providing a non-trivial filter system.

Yet another object of the present invention is that the indecent material passes through the screen and the filter media continues to pass through the screen. The scraped water will come out of the container through the screen and be discharged onto the vehicle. provides a filter device having a filter media supported by a screen. There are many things.

Other objects of the present invention 4 Improved fiber making use of a mixture of walnut shells and hiracholi shells Our goal is to provide router equipment.

Other purposes provide filter media consisting of husk, walnut husk and apricot seed. It's about doing.

These and various other objects and advantages of the present invention are further explained in the detailed description and advantages that follow. By reading the claims and referring to the accompanying drawings, it will be readily apparent to those skilled in the art. It will become clear.

The above object is achieved according to the invention by a device made substantially in the manner described herein. This is achieved in accordance with the present invention by providing a method for use in conjunction with a device.

Brief description of the drawing FIG. 1 is a partially schematic diagram of a filter device and filtration method made in accordance with the present invention. Elevation view partially shown in side view.

FIG. 2 is a side view in partial cross section of another embodiment of the invention.

FIG. 3 is a partial perspective view illustrating the details of a part of the present invention.

4, 5 and 7 are perspective views illustrating a number of different embodiments of the invention. FIG. 1 is a partial view and a detailed view.

Figure 6 shows the book disclosed in Figures 1 to 5 and 7 and designated by number 6 in Figure 3. FIG. 2 is an enlarged detail view of a portion of the device.

8 to 12 are partially schematic and partially schematic illustrations of the various operating stages of the invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In each of the drawings, in particular, FIG. 1 shows a filter made according to the present invention. System IO is disclosed. This system IO includes a container forming an enclosure 14. Contains 12. The enclosure 14 is referred to as a lower enclosure 16 and an upper enclosure 18. I can do it.

The pump assembly 20, which can take many different forms, includes a support 2. 2, the support t; from which the pump 20 was positioned at the upper end of the container. Manhole assembly 24 down by 9.

Pump 20 includes a suction section 26 and a nozzle 28. The nozzle is equipped with an outlet 30 It is. The outlet 30 of the nozzle is spaced above and filled with filter media filling tube 19. It is possible to arrange it at right angles to the tube 29 and to position it in another raised position.

The arrow numbered 32 indicates the Qi% troy with the nozzle 28 positioned at the center of the toroid. A toroidal flow pattern indicates a toroidal flow pattern due to the flow of fluid into the suction section 26. This is caused by the outflow of fluid from the nozzle outlet 30.

A screen device 34, which can take the form of multiple wings, is located within the lower enclosure. It is attached. The edge extending in the downward circumferential direction of the screen 34 is attached to a flange. 36 terminates in an attached relationship to the α force. Nozzle 2 is installed on the screen 34. 8 and an apex 38 that is axially aligned with suction portion 26 . screen mounting The device 34 is made up of a plurality of individual elements 40, which elements are triangular in shape. and adjacent opposite sides 42, 44 . It has a base 46 and a common apex 48 . side 42,44 are attached to each other while base 46 is attached to flange 36.

Flange 36 is supported by a lower flange 48 as shown, which flange is surrounded by It is attached to the outer shell 12 forming the body 14.

Screen 34 separates lower chamber 16 into filtrate chamber 50, as indicated by fill tube 19. Leave ample space for filter employment.

This arrangement also provides sufficient space in the upper enclosure 18 for the waste room. No. As disclosed in FIG. Therefore, it is a fluidized bed and flows in a toroidal flow path.

Access to suitable sewage treatment facilities to treat sewage unless the contaminated material is of high value. The valve 52 would then be connected to a collection and holding facility.

Valve 51 removes compressible fluid from the image upper end of upper enclosure 18.

The water inlet 54 should allow the container to receive contaminated liquid that must be filtered. It is connected. The filtrate valve 58 is connected to provide a flow path for clean filtered water. It will be done. Valve 60 replaces the filter media if it is appropriate to renew the filter media. To provide a simple device that can remove everything from the enclosure 14. The filtrate chamber 50 is a pipe 55 The tube is connected to a tee receiving a valve 52.58.

Computerized control panel 62 performs WI4ol and valves 52°54.58 conduit signals for the excitation of and control of operation of the pump 20 in a logical predetermined sequence. 0 number 55°57.59 sending along 63.64 excites valve 54.52.58 The number 0 66 indicating the control device indicates the input of power to the control panel 62.

In the embodiment MII of the invention illustrated in FIG. is shown supported within the lower enclosure 16.

A screen 134 separates the media from the filtrate chamber 50, with the filter media being enclosed above. Liquid contained within body 18 is separated from screen 134.

Pump 20° is located outside the container, and pump 20° is located within the upper end of the container. suction section 26 supported symmetrically and aligned with toroidal channel 32 of FIG. ．． 26' is included. The nozzle 28 extends axially downward through the manhole 24. It extends and terminates at the outlet 30 and near the fill tube 19 . The filtrate has 55 parts. The valve 52.58 exits from the valve (not shown).

3, i84, 5 and 7 show various types of screen device 34 shown in FIG. 1. The configuration is disclosed. In Figures 1 and 3, the screen devices are very similar. Similar. In FIG. 4, the screen device is located at the axis 38 of the pyramid. It is a low-headed pyramid with sides 140 that are closed.

Figure 7 shows the filter of Figure 5 inverted; Spherical filter devices are preferably provided in segments 240 and 340, respectively, as shown. Ru.

FIG. 6 is an enlarged detailed view showing the structure of the screen device 134.

The screen device of FIG. 6 preferably has 0.03 cm (0.015 cm) between adjacent bars. Thickness, 31 cm (1/8 in.) centered to provide a 1/8 in. H) is a wedge wire plate member made of rod. This type of structure is commercially available. It is called a wedge-shaped screen. Figures 8 to 12 are similar to Figures 1 and 12. 2 illustrates the operation of the device disclosed in FIG.

The 8aS for this device is minimal to minimize cost and complexity. 1st The filtration unit shown in Figure 1 is immersed within the top of the container with a walkway accessible to the container. one fluidizing pump or an external pump discharging into the center of the vessel as seen in Figure 2. and in Fig. 1 is made into a conical shape (i.e. T-B) and welded to the inside bottom of the container. one wire screen, fixed or otherwise fixed around it; The vehicle has one inlet pipe leading to the upper end of the container, including one check valve, two excitation valves, viz. The center of the bottom of the container consists of the excitation valve for clean water and the excitation valve for discharge to the discharge tank. It consists of only one outlet pipe. The filter is compared to a paper filter. A more efficient technology has been adopted. Activation of filters takes less time. It takes less than 20 minutes, and the volume of waste discharged is comparable to that of a paper filter. Occurs less frequently.

Filtration and cleaning sequence: 1. Filtration...30 hours or less 2. i! Work......1 5 seconds 3, Discharge 12 minutes 4, Sedimentation under normal conditions ...1 minute 5. Standardization・・・・・・1 minute Return to step 1 As can be seen from Figure 8, wastewater is transported from the wastewater source by a feed pump (not shown). It is discharged through an inlet pipe 54 near the top of the container S12. Sewage passes through the media layer The flow flows downwardly and then through the bottom conical wire screen 34 where it is solidified. The body is captured and remains within the media layer 5, and the clean water is passed downward through the clean water and outlet valve 58. leaks to. Filtration mode can be set on timer to involve different types of water contaminants 14 times. If the contaminated water is more contaminated than well water, the filtration sequence should be of shorter duration and activation of the media layer more frequent. dirt Activation and drainage are required very frequently if the dye water contains small amounts of solids. Since this does not occur, the filtration time can be extended.

As can be understood from Figure 9, as time elapses for the filtration mode or the filter becomes If the pressure drop increases incorrectly, valve 58 (the outlet for clean water) closes and No more wastewater flows into the container through the inlet pipe; the fluidization pump 20 It's on.

and begins to pull up contaminated water and media from above by suction action.

Contaminated water and media flow downwards into the nozzle 28, for example into a container as shown at 32 in FIG. It is returned to the container. Contaminated water is removed by flowing it downward through the middle of the container. It is directed onto the conical screen, flows down its side, and then hits the side of the S. First, the pump inlet leaks. This flow is known as a toroidal channel. form a flow. In the fL function mode, the filter layer is formed into a mixing toroid. Lasts for 15 seconds to ensure that

In Figure 1O, once the filter has been fluidized, the discharge (in Figure 1) The outlet valve 52 is opened and the pump 20 continues to mix and scrub the filter layer continuously -υ. remains switched on. Created first as media in filtration mode. The conical screen used here has a dual function, performing a new task of cleaning the media. This unique method of utilizing one screen as a device is the object of the present invention.

Here and there the conical screen acts as a separating device. This holds the medium, but Unwanted solids, dirt, and other contaminants are cleaned through the screen openings and It flows downwardly through the outlet discharge valve 52 (FIG. 1) and is sent to a discharge section. (back Wash) Drainage time is only 12 minutes under normal wood filtration conditions.

In Figure 11, once the discharge is completed, the outlet discharge valve 52 (of Figure 1) is closed. Similarly, the fluidization pump is switched off. The explosion causes the medium to move onto the conical screen. Return to the area around the two conical screens to form an activation layer. allowed to settle The time it takes is about 1 minute.

In Figure 12, once the activation layer is precipitated, the filter control (of Figure 1) The controller 62 moves the system to the pre-consideration or normalization stage. This is an extra Water and solids can flow out through the discharge valve, thus creating an activated layer for the rest of the filtration cycle. This is accomplished by opening the outlet discharge valve 52 (of FIG. 1) so that it is ready. this At the end of the normalization phase, valve 58 is opened and filtration is started again. The clean water can be transferred to any location where the water is stored.Secondly, the valve 52 is closed.

The control board 62 is configured to program according to the desired program selected for the particular filter operation. The system variables and control panel 62 are as described above to achieve various operating modes. Sequence! T! It can be equipped with a cam type timer that controls 4 times. The timer has two clocks Open and close valves 52 and 58! 4 controls, the pump can be switched off and turned off by the US panel. Switched on.

The filter media used is shredded for efficient filtration. Due to the somewhat loose filling and the longevity of the medium and the wear of the container, British walnut shells can be added to improve wear and tear. The following materials, viz. Walnut shell.

Mushiko using any mixture of crushed hiracholi shells and crushed apricot shells I can also do it.

Pump horsepower, container diameter and length, and the filt required for typical filter installations. Reference is made to applicant's earlier U.S. Pat. No. 4,496,464 for the amount of black bodies. .

FIG. Filter media is present. Needless to say, this operation occurs when the r medium is inside the container. within the scope of the claimed term J. it is conceivable that.

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Claims (1)

[Claims] 1) A method of filtering contaminants from a fluid stream, the method comprising: (1) having a volume through which the liquid can flow; Installing a screen device inside the vessel; (2) Place the filter media on and upstream of the screen device and into the container. during the installing step, the filter/filter medium does not substantially penetrate the screen device; (3) be made of multiple separate pieces of filter material; (3) contain contaminated liquid; The contaminants are passed through the flow medium through the screen device and away from the container while keeping the contaminants in the medium. the step of attaching it to the top; (4) The following steps, namely: a) communicating the pump suction with a liquid contained within the container; b) locating the pump outlet in spaced relation to the pump suction; floor; c) flowing the liquid contained in the container into the pump suction section; and at such a rate that substantially all of the liquid and medium can be stirred with a large force. traverses the screen device, thus allowing the medium to pass through the screen while the medium is contained within said container. Rub. transferring the majority of the contaminants from the medium into the liquid; d) the liquid containing the contaminants; While the body is evacuated through the screen device and from the container, relatively contaminated flowing the liquid until most of the suspended contaminants have been removed from the container; This step cleans most of the adhering contaminants from the medium while it remains in the container. floor; (5) Reduce the flow velocity to a value that allows the media to settle into the filter bed, step (3) ) to repeat A filtration method consisting of: 2) locating the screen in a spaced relationship relative to the opposite end of the container; separating the container into an upper chamber and a lower chamber; discharging along the longitudinal central axis of the container; The pump outlet is installed so that the liquid and the medium are fluidized during the scrubbing action. 2. The method of claim 1, comprising the step of: 3) Screens and pumps are installed so that the fluidized bed takes on the shape of a toroid during the rubbing action. arranging the pump inlets relative to each other; Claims followed by a rubbing stage, said rubbing stage being followed by a draining, settling and normalizing stage. The method described in Section 2. 4) The screen is polygonal in shape with vertices lying along the central axis of the container. The method according to claim 2, wherein 5) Claim 1, wherein the medium is a mixture of crushed walnut shells and hickory shells. The method described in section. 6) An inlet that provides flow of contaminated liquid into one end and filtered liquid exits the container. said container having a possible outlet; a screen adjacent said outlet and supported within said container; a polyurethane cell within said vessel and supported on said screen for normal filtration operation; a quantity of granular filter media, wherein contaminants are captured by said granular filter media; the filtered liquid exiting through the screen and the outlet; and The granular filter media can be fluidized without removing the granular filter media from the container. an intermittently operable screen connected to the interior of said container to allow cleaning; Scrubber device The scrubber device: a suction inlet in the container for receiving a flow of liquid from the interior of the container and the screen; a pumping device having a pump outlet nozzle in said container directed towards said pump outlet; The granular filter media is fluidized within the liquid so that the granular filter media is fluidized within the liquid. scraping the media and transferring removed contaminants from the granular filter media into the liquid; from said granular filter media; Liquid containing rubbed contaminants is removed from the container through the screen and the container outlet. Contains a device for removal through A filter system consisting of: 7) the screen has a central apex facing the pump outlet nozzle; Lean apex and the pump outlet nozzle ■ Exist along the longitudinal central axis of the vessel The filter system according to claim 6. 8) The screen according to claim 7, wherein the screen is in the form of a pyramid. Luther System. 9) The filter according to claim 7, wherein the screen is in the form of a hemisphere. - System. 10) A method of filtering contaminants from a liquid, comprising: 1) placing a screen device in a container; and support the filter media upstream of the screen device and connect it to said screen device. an aperture is provided and the aperture substantially prevents passage of the medium through the aperture; 2) Pour the contaminated liquid into the container and filter the flow. - through the media, through the screen media and while the contaminants are deposited on the media. step 3) significantly greater than the pressure drop at the beginning of step 2). Contaminants removed by the filter media have a high pressure drop across the filter media. a step of implementing step 2) until a load of 4) directing the flow towards the screen device to scrape contaminants from the filter media; This allows the liquid contained in the container to flow along the path inside the container, thereby eliminating contamination. fluidizes the dye and filter media and simultaneously removes the fluidized material contained within the container. The contaminant-containing liquid is passed through a screen until most of the suspended contaminants are removed. During forced separation from the container, a relatively clean liquid was allowed to flow into the container, thus removing the leaving the medium in the container; 5) Re-depositing the rubbed media onto the screen device and then repeating step 2) steps and 6) A filtration method in which the medium includes crushed hickory shells. 11) Claim 1 wherein said medium comprises at least 50% crushed hickory shell. The method described in item 0. 12) Filter contaminants, including suspended solids, from a liquid so that the medium contains crushed hickory shells. Contains filter media. 13) The medium contains at least 10% crushed walnut shells mixed with crushed walnut shells. 13. A filter medium according to claim 12, comprising husks.